Load Specifications
Load data in caliber 7 mm WSM with .284 | 140gr | NorthFork Bonded Core bullet and 88 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and ReloadSwiss RS 70.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 56,724 psi | 89% | 2910 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 54,143 psi | 85% | 2927 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,173 psi | 88% | 3028 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 57,116 psi | 90% | 2966 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,259 psi | 85% | 3022 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 56,710 psi | 89% | 2995 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,172 psi | 86% | 3064 fps | 98.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,681 psi | 89% | 3120 fps | 97.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,594 psi | 89% | 3130 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,331 psi | 85% | 2969 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,592 psi | 86% | 2995 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,143 psi | 86% | 3084 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 56,420 psi | 88% | 3104 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,723 psi | 86% | 3054 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,709 psi | 87% | 3114 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,634 psi | 82% | 3041 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,730 psi | 72% | 2966 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 56,971 psi | 89% | 3196 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,966 psi | 80% | 3031 fps | 97.5% |
| Bofors RP3 | <<locked>> | 84% | 55,129 psi | 86% | 2986 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,709 psi | 87% | 3114 fps | 98.4% |
| Bofors RP7 | <<locked>> | 88% | 54,505 psi | 85% | 2972 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 84% | 55,390 psi | 87% | 3002 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 56,376 psi | 88% | 3074 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 88% | 55,941 psi | 88% | 3031 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 98% | 56,884 psi | 89% | 3064 fps | 96.7% |
| Hodgdon H4831 SC | <<locked>> | 98% | 55,767 psi | 87% | 3045 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,521 psi | 87% | 3005 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,739 psi | 89% | 3038 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,686 psi | 70% | 2995 fps | 96.7% |
| Hodgdon Superformance | <<locked>> | 90% | 56,855 psi | 89% | 3117 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,492 psi | 57% | 1883 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,290 psi | 90% | 3005 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,202 psi | 88% | 2979 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,361 psi | 87% | 2963 fps | 99.2% |
| IMR 4350 | <<locked>> | 92% | 55,651 psi | 87% | 3009 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,115 psi | 88% | 2999 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 54,839 psi | 86% | 3015 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,014 psi | 88% | 3022 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,592 psi | 86% | 2992 fps | 96.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,128 psi | 85% | 3094 fps | 96.9% |
| Lovex S062 | <<locked>> | 84% | 56,695 psi | 89% | 2976 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,217 psi | 88% | 2995 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 57,653 psi | 90% | 3041 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,557 psi | 73% | 2871 fps | 98.7% |
| Norma 203B | <<locked>> | 84% | 57,276 psi | 90% | 3031 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,420 psi | 88% | 3061 fps | 98.2% |
| Norma MRP | <<locked>> | 98% | 55,390 psi | 87% | 3143 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 56,579 psi | 89% | 3061 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,650 psi | 86% | 3005 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,491 psi | 85% | 3107 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 92% | 55,376 psi | 87% | 3064 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,776 psi | 76% | 2976 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,101 psi | 58% | 1929 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,376 psi | 87% | 2989 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,927 psi | 88% | 3100 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,114 psi | 85% | 3045 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,376 psi | 88% | 3133 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,860 psi | 70% | 2992 fps | 97.9% |
| Rottweil R 902 | <<locked>> | 82% | 55,158 psi | 86% | 2936 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,259 psi | 87% | 2982 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 57,014 psi | 89% | 3038 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 98% | 57,537 psi | 90% | 3097 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 88% | 54,505 psi | 85% | 2972 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,217 psi | 88% | 2995 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 56,695 psi | 89% | 2976 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 57,653 psi | 90% | 3041 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,782 psi | 89% | 3041 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,043 psi | 88% | 2864 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,999 psi | 88% | 2946 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 57,043 psi | 89% | 3094 fps | 98.6% |
| Somchem S355 | <<locked>> | 86% | 55,216 psi | 87% | 2979 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 55,201 psi | 87% | 2969 fps | 96.3% |
| Somchem S365 | <<locked>> | 94% | 56,159 psi | 88% | 3064 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,621 psi | 86% | 3015 fps | 98.8% |
| Vihtavuori N135 | <<locked>> | 82% | 55,593 psi | 87% | 2894 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,753 psi | 87% | 2910 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,652 psi | 89% | 2956 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,955 psi | 86% | 3002 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,940 psi | 85% | 2989 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 84% | 57,290 psi | 90% | 2949 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,375 psi | 85% | 3009 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 55,129 psi | 86% | 3071 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 55,637 psi | 87% | 3133 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,795 psi | 86% | 2966 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,666 psi | 89% | 3081 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,109 psi | 75% | 3110 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,549 psi | 85% | 3005 fps | 98% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 52,953 psi | 83% | 2858 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,430 psi | 79% | 2864 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 34,693 psi | 54% | 2618 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 50,183 psi | 79% | 2864 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,493 psi | 60% | 2726 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 80% | 47,166 psi | 74% | 2838 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 88% | 42,569 psi | 67% | 2825 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 96% | 49,516 psi | 78% | 2992 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,489 psi | 82% | 3064 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,805 psi | 75% | 2861 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,068 psi | 80% | 2936 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,362 psi | 59% | 2736 fps | 98.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,409 psi | 66% | 2864 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 42,206 psi | 66% | 2815 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 92% | 42,656 psi | 67% | 2871 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,441 psi | 43% | 2474 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 90% | 33,185 psi | 52% | 2657 fps | 95.4% |
| Alliant Reloder-26 | 59.4 gr | 82% | 31,531 psi | 49% | 2654 fps | 95.5% |
| Bofors RP15 | <<locked>> | 94% | 42,076 psi | 66% | 2854 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 48,341 psi | 76% | 2877 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 42,656 psi | 67% | 2871 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 42,351 psi | 66% | 2740 fps | 96.3% |
| Hodgdon H380 | <<locked>> | 80% | 48,660 psi | 76% | 2887 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 40,379 psi | 63% | 2772 fps | 96.3% |
| Hodgdon H4350 | <<locked>> | 80% | 43,337 psi | 68% | 2799 fps | 95.8% |
| Hodgdon H4831 | <<locked>> | 96% | 53,026 psi | 83% | 2999 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 52,011 psi | 82% | 2982 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,838 psi | 55% | 2621 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,055 psi | 83% | 2982 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,989 psi | 66% | 2930 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 39,450 psi | 62% | 2782 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,340 psi | 43% | 1686 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,650 psi | 84% | 2946 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,632 psi | 78% | 2874 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,837 psi | 81% | 2904 fps | 98.8% |
| IMR 4350 | <<locked>> | 82% | 40,625 psi | 64% | 2723 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,859 psi | 69% | 2776 fps | 97.2% |
| IMR 4831 | <<locked>> | 80% | 37,086 psi | 58% | 2680 fps | 98.1% |
| IMR 4895 | <<locked>> | 80% | 52,388 psi | 82% | 2966 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 51,401 psi | 81% | 2933 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 96% | 47,311 psi | 74% | 2963 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 49,879 psi | 78% | 2867 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,263 psi | 65% | 2720 fps | 97.8% |
| Lovex S070 | <<locked>> | 80% | 39,537 psi | 62% | 2700 fps | 96.3% |
| Lovex S071 | <<locked>> | 90% | 33,692 psi | 53% | 2592 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 50,415 psi | 79% | 2923 fps | 100% |
| Norma 204 | <<locked>> | 84% | 42,873 psi | 67% | 2808 fps | 95.1% |
| Norma MRP | 61.9 gr | 88% | 39,073 psi | 61% | 2818 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 38,189 psi | 60% | 2720 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 80% | 50,865 psi | 80% | 2943 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 47,152 psi | 74% | 2969 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 37,115 psi | 58% | 2703 fps | 96.2% |
| Ramshot Magnum | <<locked>> | 96% | 42,148 psi | 66% | 2841 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,760 psi | 44% | 1726 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,602 psi | 76% | 2871 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,049 psi | 71% | 2920 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,305 psi | 60% | 2743 fps | 98% |
| ReloadSwiss RS 70 | 57.4 gr | 80% | 37,057 psi | 58% | 2746 fps | 97.4% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,914 psi | 61% | 2848 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 51,822 psi | 81% | 2884 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,411 psi | 71% | 2822 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 47,036 psi | 74% | 2861 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 88% | 41,205 psi | 65% | 2795 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 42,351 psi | 66% | 2740 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,263 psi | 65% | 2720 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 49,879 psi | 78% | 2867 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,537 psi | 62% | 2700 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,731 psi | 73% | 2877 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,644 psi | 73% | 2723 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,393 psi | 63% | 2661 fps | 96.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 43,801 psi | 69% | 2854 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 45,643 psi | 72% | 2818 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 51,488 psi | 81% | 2907 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 34,679 psi | 54% | 2674 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 39,349 psi | 62% | 2723 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 52,170 psi | 82% | 2844 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,228 psi | 82% | 2858 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,642 psi | 68% | 2746 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,639 psi | 62% | 2720 fps | 98.4% |
| Vihtavuori N165 | <<locked>> | 92% | 41,350 psi | 65% | 2756 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 50,560 psi | 79% | 2851 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,117 psi | 61% | 2720 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 80% | 30,458 psi | 48% | 2559 fps | 96.3% |
| Vihtavuori N560 | <<locked>> | 94% | 48,501 psi | 76% | 3002 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,725 psi | 61% | 2687 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 40,582 psi | 64% | 2779 fps | 96.4% |
| Winchester StaBALL HD | <<locked>> | 82% | 26,005 psi | 41% | 2507 fps | 95.9% |
| Winchester Supreme 780 | <<locked>> | 92% | 44,353 psi | 70% | 2825 fps | 95.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 95 powders for 7 mm WSM loaded with the .284 | 140gr | NorthFork Bonded Core. Alliant Reloder-26 delivers the highest muzzle velocity at 3,196 fps; across all powders the maximum-charge window runs from 1,883 fps to 3,196 fps. Accurate 3100 gives the best case fill at 100 %, and 95 of the 95 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, ADI AR 2217 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Alliant Reloder-26, Norma MRP, ReloadSwiss RS 70 rank at the top here: for 7 mm WSM with the .284 | 140gr | NorthFork Bonded Core they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.